Slate washer and wiper



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' P. ,D. HORTON.

SLATE WASHER AND WIPE'R. I No. 339,652. Patented Apr. 13, 1886.

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PETER DAVIS HORTON, OF SAN FRANCISCO, CALIFORNIA.

SLATE WASHER AND WIPER.

.EPECIPICATION forming part of Letters Patent No. 339,652, dated April13, 1886.

Application filed November 21, 1885. Serial No. 183,580.

f0 all whom, it petty concern.-

Be it known that I, PETER DAVIS HORTON, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented a new and useful Improvement in Slate \Vashersand "Wipers, of which the following is a specification.

The object of my invention is to provide a means for the easy washingand rapid drying of the surfaces of slates, mainly adapted for use inschools; and my invention is intended as an improvement upon a slatewasher and wiper for which Letters Patent of United States have beenallowed to me.

In the accompanying drawings, forming a part of this specification,Figure]. is a view in perspective of my improved slate washer and wiper.Fig. 2 is a vertical section of the same with stopper and spongeremoved.

In carrying out my present invention I employ an elastic bulb, sack, orpouch, A, similar to that described in my former specification, theouter end of which is pierced with a hole to receive a plug, B. Anannular groove, 0, is made centrally in the plug, so that when the plugis forced into the perforation in the end of the bulb the opening willbe expand ed or distended and the mouth of the opening spring into theannular groove, closing tightly around the plug and renderi ug itwater-tight at that point.

The stopper D in the mouth of the flexible or elastic bulb, to which asponge is attached, is of metal or wood, as I have found that a stoppermade of cork and placed at that point is more liable to be forced out ofthe mouth when pressure is brought to bear upon the bulb orfluid-container. An annular groove, D, is formed around the stopper,similar to that shown in the plug hereinbefore described, and when thestopper is in position in the mouth of the bulb or liquid-container therim or edge of the mouth will be sprung into the groove and contractaround it in such a manner as to render the mouth of the bulb orfluid-container air and water tight.

The stopper in the mouth of the bulb and the plug in the lower endthereof are two important features of my invention, as by the former Iam enabled to make the mouth of (No modeL) the container air and watertight, and by the latter I am enabled to hold the liquid or fluid insuspension and force it out in a spray from the elastic container or indrops, as desired. For the purposes of this plug I have discovered thatwhen certain kinds of wood having porous and straight or parallel fibersare placed in the end of an elastic or flexible tube or bulb containingwater or other liquid or fluid and the mouth of the tube closed, whenpress ure is brought to bear upon the bulb or tube, the waterwill beforced out through the fibers of the wood drop by drop or in spray, andwhen the pressure upon the pouch or bulb is removed and expansion takesplace any remaining water on the extreme end of the porous plug will bedrawn back through the plug into the bulb and be held in suspensionuntil pressure is again brought to bear upon the bulb, leaving the endof the plug comparatively dry. Thus no more than one drop at a time needbe expelled or forced out through the end of the plug instead of a smallstream, as in my former invention. In selecting woods for the plug inthe end of the bulb maple wood is desirable; yet there are several kindswhich may be employed for that purpose.

It is evident from the above description that my device may be employedas a holder for the various perfumes and medicines where only smallportions are needed at certain times.

Having thus described my invention, what I claim, and desire to secureby Letters Patout, is

In a slate washer and wiper, the combination of the flexiblewater-container A, the sponge-carrying stopper D, provided with acircumferential groove, and adapted to be inserted into the mouth of thebulb, and the plug B, circumferentially grooved at G, and inserted in anoriiice in the end of the bulb A, opposite its mouth, substantially asshown and described.

In testimony that I claim the foregoing I Witnesses:

G. NV. M. SMITH, CHAS. E. KELLY.

